// stock10.cpp Stock class with constructors, destructor added

#include <iostream>
#include "stock10.h"

// constructors (verbose version)
Stock::Stock() {    // default constructor
    std::cout << "Default constructor called\n";
    company = "no name";
    shares = 0;
    share_val = 0.0;
    total_val = 0.0;
}

Stock::Stock(const std::string &co, long n, double pr) {
    std::cout << "Constructor using " << co << " called\n";
    company = co;

    if (n < 0) {
        std::cout << "Number of shares can't be negative; "
                  << company << " shares set to 0.\n";
        shares = 0;
    } else shares = n;
    share_val = pr;
    set_tot();
}
// class destructor
Stock::~Stock() {
    std::cout << "Bye, " << company << "!\n";
}
// other methods
void Stock::acquire(const std::string &co, long n, double pr) {
    company = co;
    if (n < 0) {
        std::cout << "Number of share can't be negative; "
                  << company << " shares set to 0.\n";
        shares = 0;
    } else shares = n;
    share_val = pr;
    set_tot();
}

void Stock::buy(long num, double price) {
    if (num < 0) {
        std::cout << "Number of shares purchased can't be negative. "
                  << "Transaction is aborted.\n";
    } else {
        shares += num;
        share_val = price;
        set_tot();
    }
}

void Stock::sell(long num, double price) {
    using std::cout;
    if (num < 0) {
        cout << "Number of shares purchased can't be negative. "
             << "Transaction is aborted.\n";
    } else if (num > shares) {
        cout << "You can't sell more than you have! "
             << "Transaction is aborted.\n";
    } else {
        shares -= num;
        share_val = price;
        set_tot();
    }
}

void Stock::update(double price) {
    share_val = price;
    set_tot();
}

// promises not to change invoking object
void Stock::show() const {
    using std::cout;
    using std::ios_base;
    // set format to #.###
    ios_base::fmtflags orig = cout.setf(ios_base::fixed, ios_base::floatfield);
    std::streamsize prec = cout.precision(3);

    cout << "Company: " << company
         << " Shares: " << shares << '\n';
    cout << " Share Price: $" << share_val;
    // set format to #.##
    cout.precision(2);
    cout << " Total Worth: $" << total_val << '\n';

    // restore original format
    cout.setf(orig, ios_base::floatfield);
    cout.precision(prec);
}

const Stock &Stock::topval(const Stock &s) const {
    if (s.total_val > total_val)
        return s;
    else
        return *this;
}

